1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
klio [65]
3 years ago
12

An experiment was carried out at 25 °C by dissolving an unknown mass of magnesium ribbon into excess 1 mol dm–3 hydrochloric aci

d. The volume of gas produced over a period of 6 minutes was measured using a gas syringe. The result was plotted as shown in Figure 1
Time (min)

Figure 1 Volume of gas produced against time

a)Write a balanced equation for its reaction with hydrochloric acid.






(2 marks)
Use the data from Figure 1
to determine the total volume of gas produced (1mark)







to calculate the moles of gas produced at STP (2 marks)
[1 mole of any gas at STP has a volume of 22 400 cm3.]






to calculate the mass of limestone magnesium used.














(2 marks)

(i) What is meant by the term ‘rate of reaction’?


(1 mark )

Besides temperature, identify TWO other factors that can affect the rate of the reaction.




marks)
Chemistry
1 answer:
user100 [1]3 years ago
8 0

Answer:

to calculate the mass of limestone magnesium used.

Explanation:

You might be interested in
A space shuttle is used for space------
Gre4nikov [31]

Answer: YES THATS TRUE

Explanation:

8 0
3 years ago
Read 2 more answers
________ are weak bonds that are not strong enough to hold atoms together to form molecules but are strong enough to form bonds
olga_2 [115]

<u>Hydrogen bonds </u>are weak bonds that are not strong enough to hold atoms together to form molecules but are strong enough to form bonds within and around large molecules.

  • The hydrogen bond is weak bond.
  • The hydrogen bond  is electrostatic force of attraction between hydrogen atom and more electronegative atoms or group ( like Florine , oxygen or nitrogen) which is contently bonded.
  • The hydrogen bond is occur in polar , contently bond atoms in different molecules.
  • Example is H-O-H or NH_{3}
  • The positively charged hydrogen side of one water molecule is bond with negatively charged oxygen side of another molecule.

learn about Hydrogen bond

brainly.com/question/10904296

#SPJ4

3 0
2 years ago
From the mass of Al reacted, how many moles are present? What is the mole ratio between Al and H2 in the balanced chemical react
tigry1 [53]

Answer:

From the mass of Al reacted, how many moles are present? We don't have the mass of Al reacted

What is the mole ratio between Al and H2 in the balanced chemical reaction?

By stoichiometry, ratio between Al and H₂ is 3:2

What units are required on the temperature when doing calculations with gases? °K degrees

The value of R is 0.082 L.atm/mol.K

Explanation:

A chemical reaction for this can be this one:

2Al (s)  + 6HCl (aq)  →  2AlCl₃(aq)  + 3H₂ (g)

Balanced

To get the moles which are present in the mass of Al reacted you must calculate:

Al Mass / Al molar mass = Al moles

The Ideal Gas equation is this one:

Pressure . Volume = n° moles . R (gases constant) . T°K

The temperature must be in K, because the units of R

We usually use R = 0.082 L.atm/mol.K

5 0
3 years ago
The ease which an acid or base dissociates in a solution refers to
Andrew [12]

Answer:

c.) saturation

Explanation:

5 0
3 years ago
Pizza dough is topped with sauce, cheese, pepperoni, sausage, mushrooms, bell peppers, and olives. What type of mixture is this
Contact [7]
A slice of pizza is an example of a Heterogeneous mixture.
4 0
3 years ago
Other questions:
  • What is the relationship between a scientific theory and a scientific law
    8·1 answer
  • Physical signs of stress typically include ________.
    13·1 answer
  • Choose the number of significant figures indicated 0.06
    10·1 answer
  • One way to determine the age of a glacier is to measure its?
    13·2 answers
  • How many photons are produced in a laser pulse of 0.364 J at 477 nm?
    10·1 answer
  • What is the symbol for Phosphorus on the periodic table of the elements?
    15·2 answers
  • Knowing that the distances the truck traveled during each segment were 30, 45, 50, and 65 respectively, what was the total dista
    6·1 answer
  • A.<br> Na3PO4 + _HCI - H3PO, + _NaCl<br> What type of reaction and balance the equation
    6·2 answers
  • Which statement describes the roles of photosynthesis and respiration in the oxygen cycle?
    14·2 answers
  • Predict the shape of the molecule.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!